How long does the sleep deprivation last?

I just feel so tired and burned out and I’m only 2 months in. I want so desperately to feel normal and have energy during the day. I feel like a grumpy zombie and being so exhausted makes me feel on edge and overwhelmed and unable to properly use my cognitive functions during a time that is so amazing and it’s robbing me of joy and happy times with my family. I also exclusively pump and have a low supply so waking up in the middle of the night to pump and maintain my supply is crucial for me and I’m only able to feed my baby 75% breastmilk even tho I pump around the clock and have to top off the other 1/4 with formula even tho I try so hard to keep up my supply 🥹. I’m so tired. I just don’t want to be grumpy and exhausted anymore. I want to enjoy my time with my family so badly.